Panasonic Urban Multi MX1R Series, Service Manual, Page: 63 / 643

Function PACD011001C2
42 Function Urban Multi “MX1, ME1 Series” Using R-22
1.13 Step Down / Safety Control
→
Standby (Forced Thermostat OFF)
→
Stop Due
to Malfunction
1.13.1 MX1 Series
High Pressure (Hp) Control
Low Pressure (Lp) Control
Discharge Pipe Temperature (Td) Control
Inverter Current Control
Hp
≥
23.5kg/cm²
(2.303MPa)
Hp
≥
21.0kg/cm²
(2.058MPa)
Hp
≥
24.0kg/cm²
(2.352MPa)
Hp>25.0kg/cm²
(2.450MPa)
Hp>27.5kg/cm²
(2.695MPa)
(Cooling)
Frequency
1 STEP DOWN
(Heating)
30Hz+OFF(30Hz)
8, 10HP(5HP)
76Hz+OFF(48Hz)
Forced OFF
by thermostat E3 stop due
to malfunction
(VF001)
Lp>2.0kg/cm²
(0.196MPa)
R5T
≤
Te+10˚C
&
Lp<1.7kg/cm²
(0.167MPa)
DSH>15˚C
&
Lp<1.2kg/cm²
(0.118MPa)
Lp<0.3kg/cm²
(0.029MPa)
Lp<0kg/cm²
(0MPa)
(Cooling)
30Hz+OFF (30Hz)
(Heating)
Lp<1.0kg/cm²
(0.098MPa)
Lp
≥
0.5kg/cm²
(0.049MPa)
Hot gas bypass
valve ON
116Hz+OFF(76Hz)
or
60Hz+ON(76Hz)
Injection valve ON
Lp<0.8kg/cm²
(0.078MPa)
54 Hz + OFF (54Hz)
as lower limit
Forced OFF
by thermostat
Up to 2 times
in 30 minutes
E4 stop due
to malfunction
Hot gas bypass
valve ON
(VF002)
Td
≥
130˚C
Td>105˚C
or
DSH>55˚C (DSH = Discharge Super Heating)
or
Td>90˚C&Lp<3kg/cm² (Control during cooling)
or (0.294MPa)
Td>90˚C&Lp<2kg/cm²
or (0.196MPa)
Td>90˚C&During high pressure control&Lp<3.5kg/cm²
(0.343MPa)
u
38Hz+OFF(38Hz): Both high
u
106Hz+OFF(-): STD only high
u
38Hz+ON(-): INV only high
Td>135˚C
Forced thermostat OFF
Up to 2 times
in 100 minutes
Td
≥
135˚C
F3 stop due
to malfunction
(VF005)
Control
during
heating
( )
INV
≥
27.0A(3
φ
, 220V)
15.0A
(3
φ
, 380~415V / 3
φ
, 380V)
FREQUENCY
1 STEP DOWN
L8 stop due
to malfunction
27.0 / 15.0
INV
≥
27.5A(3
φ
, 220V)
15.0A
(3
φ
, 380~415V / 3
φ
, 380V)
Forced OFF by thermostat
UP to 4 times in 60 minutes
27.5 / 15.0
(VF004)